I recommend everyone to use this 123 Alpha. This 520 Alpha gives me the feeling that it has received funds from the Timi project team. Every day it's stable; I see how many people get stuck. After not using 520, I basically don't get stuck. Everyone can speak up and see if I'm the only one like this. Healthy competition promotes mutual progress. Having this new feature of counting users is indeed good, but it feels like 520 has started to waste money.